Check out the following article:
UW study shows direct brain interface between humans
This is really cool stuff.
I first remember this technology concept from the original 1987 movie Robocop.
It's also been featured more recently in movies like Iron Man and Avatar.
I've always been interested in BCI (Brain–computer interface) advancement, and the last decade or so has seen some amazing progress.
Perhaps my prediction of BCI going mainstream by 2025 will come true after all...